diff --git a/core-java/README.md b/core-java/README.md
index 8b20eebf57..8a94c9de8e 100644
--- a/core-java/README.md
+++ b/core-java/README.md
@@ -125,7 +125,6 @@
 - [An Advanced Tagging Implementation with JPA](http://www.baeldung.com/jpa-tagging-advanced)
 - [Handling Daylight Savings Time in Java](http://www.baeldung.com/java-daylight-savings)
 - [Inheritance and Composition (Is-a vs Has-a relationship) in Java](http://www.baeldung.com/java-inheritance-composition)
-- [Double-Checked Locking with Singleton](http://www.baeldung.com/java-singleton-double-checked-locking)
 - [Finding Max/Min of a List or Collection](http://www.baeldung.com/java-collection-min-max)
 - [The "final" Keyword in Java](http://www.baeldung.com/java-final)
 - [What is the serialVersionUID?](http://www.baeldung.com/java-serial-version-uid)
diff --git a/persistence-modules/spring-jpa/README.md b/persistence-modules/spring-jpa/README.md
index 2a717417d7..cb71d386e2 100644
--- a/persistence-modules/spring-jpa/README.md
+++ b/persistence-modules/spring-jpa/README.md
@@ -16,11 +16,12 @@
 - [Self-Contained Testing Using an In-Memory Database](http://www.baeldung.com/spring-jpa-test-in-memory-database)
 - [Spring Data JPA – Adding a Method in All Repositories](http://www.baeldung.com/spring-data-jpa-method-in-all-repositories)
 - [A Guide to Spring AbstractRoutingDatasource](http://www.baeldung.com/spring-abstract-routing-data-source)
-- [Advanced Tagging Implementation with JPA] (http://www.baeldung.com/jpa-tagging-advanced)
+- [Advanced Tagging Implementation with JPA](http://www.baeldung.com/jpa-tagging-advanced)
 - [A Guide to Hibernate with Spring 4](http://www.baeldung.com/the-persistence-layer-with-spring-and-jpa)
 - [Testing REST with multiple MIME types](http://www.baeldung.com/testing-rest-api-with-multiple-media-types)
 - [Obtaining Auto-generated Keys in Spring JDBC](http://www.baeldung.com/spring-jdbc-autogenerated-keys)
 - [Transactions with Spring 4 and JPA](http://www.baeldung.com/transaction-configuration-with-jpa-and-spring)
+- [Spring Data JPA @Query](http://www.baeldung.com/spring-data-jpa-query)
 
 ### Eclipse Config 
 After importing the project into Eclipse, you may see the following error: